Process for separating hydroprocessed effluent streams

Details Process for separating hydroprocessed effluent streams Process for separating hydroprocessed effluent streams

C - Chemistry, Metallurgy

10

G

196/272

C10G 47/00 (2006.01) C10G 49/22 (2006.01)

Patent

CA 1320168

T 5880 A B S T R A C T PROCESS FOR SEPARATING HYDROPROCESSED EFFLUENT STREAMS Process for separating a mixed-phase hydrocarbonaceous effluent originating from the conversion of a hydrocarbonaceous feedstock in the presence of hydrogen at elevated temperature and pressure in a multiple separator system, which effluent contains hydrogen, normally liquid hydrocarbonaceous components and normally gaseous hydrocarbonaceous components by i) separating in a first separation zone the effluent into a first liquid phase (L1) and a first vapour phase (V1), ii) cooling the first vapour phase obtained to a temperature in the range between 25 and 85 °C and separating the cooled vapour phase in a second separation zone whilst substantially maintaining the pressure of the first separation zone into a second liquid phase (L2) and a second, hydrogen- rich vapour phase (V2), iii) separating the first liquid phase in a third separation zone whilst substantially maintaining the temperature of the first separation zone and at a pressure below 60 bar into a third liquid phase (L3) and a third vapour phase (V3), and iv) separating the second liquid phase in a fourth separation zone whilst substantially maintaining the temperature of the second separation zone and at a pressure below 60 bar into a fourth liquid phase (L4) which is at least partially recovered as product and a fourth vapour phase (V4), and wherein the first separation zone is operated at a temperature between 200 and 350 °C and in such a way that between 25 and 75 %w of the effluent is obtained in the first vapour phase (V1).

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